Well i dont know exactly why your not allowed out but its something that should be cleared up, not for my sake but for your own. If they are being mean and act against it, it must be for a reason. I would suggest to ask them, talk no matter how unpleasant it may be to you. As for the living like that, we all grow up and you wont notice how fast we do till it happens. Soon enough you will live on your own, independant...and then you wont even have to deal with the person who hurt you again...if you so wish to, you can erase him from your life like he never existed. For now though all you can do is stay strong, dont provoke anymore reasons for him to hurt you...be patient and the end will be rewarding as you can imagine.
If other people (the court) wont help then just wait till you can help yourself.